Regulating valve.



1. G. PETTIS.

n REGULATING VALVE.

APPLICATION FILED AUGJ, 1914.

1 ,1 84,01 2. Patented May 23, 1916.

Il [lilla Illlllllllll UNITED s'rA'rEs PATENT OFFICE.

JOHN G. PETTII'S, OF CHICAGO, ILLINOIS, ASSIGNOR T0 THE IMPERIAL :BRASS MANU- FACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS REGULATING-vALvE.

To all whom t may concern Be it known that I, JOHN G. PETTIS, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Regulating-Valves, of which the following is a full, clear, and exact description.

My invention relates to valves for regulating the pressure of gas or liquid flowing therethrough.

The object of my invention is to provide a diaphragm actuated regulating valve in which the expansion of the diaphragm is assisted by other expanding devices independently of the pressure of the gas or liquid to regulate and decrease the flow thereof into the expansion chamber. This I accomplish by the comparatively simple means hereinafter fully described, and as particularly pointed out in the claims.

f In the drawings: Figure 1 is-a vertical central section of my improved valve. Fig. 2 is a similar viewv taken on dotted line 2 2, Fig. 1. Fig. 3 is a plan view of a bushing used in connection with my improvements. Fig. 4 is a similar view of the valveplate in A connection therewith.

The housing of my improved valve comprises a central section A; an upper section B, and a lower section C.

The lower section consists of a bell-shaped member the upper annular edge a, of which is flanged verticallyand is interiorly screwthreaded. The central portion of its bottom has a cylindrical tube or well b depending axially therefrom, and the lower end of this tube b is contracted and provided with a screw-threaded `opening which is engaged by the axially extending gage-screw'c. Between the annular edge a and the mouth of the b ore of tube b, the bottom of lower section C is inclined downward to provide space .for the accommodation of the diaphragm and its connections, as clearly shown in the drawings.

The central section A of the casing consists of an exteriorly screw-threaded cylindrical lower zone d which screws into the annular ianged edge a ofthe lower section of the casing, and above this zone its sides taper inward to its upper edge which is interiorly threaded, as shown. The lower edge of the central section is built inward a suitable distance and is provided with an annular groove in its underside that forms Specification of Letters Patent.

Application filed August 7, 1914. Serial No. 855,642.

a downwardly extending inner circular bead or rim e over which the margins of the diaphragm D extend. These margins are bent yor flanged upward over the annular edge of rim e and enter the hereinbefore mentioned annular groove and are confined and secured therein so as to hold the web of the diaphragm tight across the opening bounded by said rim, by a suitable solder E, or in any other manner.

The lower face of the diaphragm has a circular arbor F secured concentrically thereto, and this arbor has an integral tubular stud f projecting axially downward therefrom which centers the upper end of a comparatively stiff coiled expansion spring G. The lower end of this spring is seated on the circumferential iiange vof a centering-head g, and the pointed end of they gage-screw c, hereinbefore referred to, engages a central recess in the underside of the latter.'

The upper face of the diaphragm is engaged by a head H, which is, preferably, circular, and it has an integral screw-threaded stud projecting downward through a central opening in the diaphragm, onto which the central boss of .the arbor F is tightly screwed so as to clamp the diaphragm between them. This head has two plungers la., h, projecting upward therefrom diametrically opposite each other that pass vertically through suitable guide-openings in a bridge or cross-bar I, which latterv is made integral withand connects the tapering sides of the central section of the casing above the plane of its lower zone. The upper ends of the sai-,dpistons are reduced in diameter and these reduced portions extend through suitable openings in a circular-plate J, which latter is secured thereon by nuts j, j, concentrically to the axis of the casing, substantially as shown in the drawings.

Plate J is provided with a central tubular boss le that projects upward, and has a series of perforations therein encircling said boss to permit the free circulation of the gaseous or liquidA mediumv within the casing. A screw-threaded plug K is screwed downward lthrough boss la, and the lower extremity of this plug is recessed and has seated therein a pad m of rubber or other suitable material, which engages the apex of the tapered nozzle M, and regulates the How of gas or liquid discharged from the orifice thereof. The lower end of this nozzle is reduced and screw-threaded and tapped into in alinement with saidfbridge, which latterv is connected at its outer end with the source of gaseous or fluid pressure, and has a lateral branch for the accommodation of a pressure-gage (not shown) if desired. The said central section of the casing also has a lateral stub Q, projecting therefrom, preferably, at right angles to stub O, out through which the gas or liquid, whose pressure has been regulated -by my valve, is discharged. I prefer to insert a cylindrical bushing R into the upper end of the central section of the casing. This bushing has a circumferential yflange r projecting from it near its lower edge, the periphery of which is threaded and adapted to engage the female threads in the upper end of said central'section, and said flange r has a series of perforations 1" therethrough to permit of the free circulation of the gas or liquid. v.This bushing serves to guide the vibrations of the plate J, the. outer circumference of which latteren- -gages the bore ofthe bushing.

The upper section B of the casing is of an inverted cup-shape, and it has a circumferential iange s near its lower annular edge, between which and said edge'itv is exi teriorly screw-threaded and -is adapted to the nozzle normally clcsed," particularlyv screw: into the upper end ofthe central section of 'the casing and surrounds the upper portion of bushing R, substantially as shown in the drawings. The upper end of section B terminates, preferably,` in a suitable axially extending stub T, which may be closed in aysuitable manner, or may connect lwith a suitable pressure gage (not shown), if desired.`

In order to keep the discharge orifice of when myfimproved valve '-is. not in use, I

prefer to'surround the plunger between head I-I and the bridgefI with coil expansion springs m, w.- The construction and normal i 'position ofthe diaphragm may be depended upon to accomplish such closure, however, and in such event, said sprlngs 06,00, may be Y dispensed with. 'Ihe springs m, not only lServe to supplement theactlon of the d1aphragm, but they also tend to maintain the Vbridge I, separated from :said diaphragm Ywith a yielding force when employed, andthus Ifacilitate the operation.

. What I claim asf new is 1Q A regulatingv valve comprising a casing having an upper bell-shaped section, an intermediate section anda lower sectlon, a

orizontal intake passage N ,transverse alinement therewith, a

horizontal bridge extending diametrically and completelyacross the intermediate section said bridge being fairly wide and having a longitudinal bore, a discharge pas- Sage extending perpendicularly from the inner extremity of said longitudinal bore, and two vertical openings located on opposite sides of the discharge passage and in transverse alinement therewith, a diaphragm secured to the outer lower edge of the intermediate section, a pair of plungers projectsprings located in said tubular sleeve.

2. A regulating valve comprising a casing having an upper bell-shaped section, an intermediate section and a lower section, a horizontal bridge extending diametrically and completely across the intermediate section said bridge being fairly wide and having a longitudinal bore, a discharge passage extending perpendicularly-from the'inner extremity of said longitudinal bore, and two vertical openings located on opposite lsides of the discharge'passage and in transverse alinement therewith, a diaphragm secured to the outer lower edge of the intermediate section, a pair of plungers projecting-vertically upward fromthe diaphragm and parallelto the axis of the casing, said plungers being closer together than thewidth of the bridge and slidably extending through the 'vertical` side openings inv the bridge, a plateconnected to the upper extremities of the plungers, a closure device for thedischarge passage in the bridge mounted in said plate, said plate being adapted -to slide, vertically in the upper section, springs. surrounding the lower portions of the plungers and arranged.between the-bridge and diaphragm, a tubular sleeve depending from the lower located in said tubular sleeve.

A` regulating valve comprising acas-v ing having an upper bell-shaped section', 'an

lintermediate section'and a lower section, a

section, and diaphragm controlling springs horizontal bridgev extending diametrically and completely across the intermediate section said-bridge being fairly wide -and hav-l "ing ,a longitudinal bore, a discharge passage extending -perpendicularly' fromthe inner extremity of said longitudinall bore,

and two vertical openings located on oppo.

site sides of the discharge passage, in

upper extremities of the plungers, and a plug arranged in said plate and adapted to form a closure device for the discharge pas- *,to engage sage in the plate; saidI plate being slidably ,arranged in the upper section of the cas- 4. A regulating valve comprisinga casing having an upper bell-shaped section, an intermediate section and a lower section, a horizontal bridge extending diametrically and completely across the intermediate section said bridge being fairly wide and having a longitudinal bore, a discharge passage extending perpendicularly from the inner extremity of said longitudinal bore, and two vertical openings located on opposite sides of the discharge passage and in transverse alinement therewith, a diaphragm secured to the outer lower edge of the intermediate section, a pair of plungers projecting vertically upward from the diaphragm and parallel to the axis of the casing; said plungers being closer together than the width of the Vbridge and slidably extending through the vertical side openings in the bridge, a plate connected to'the upper extremities of the plungers, a screw plug centrally arranged in said plate and vertically adjustable therein, and suitable closure material in the lower end of said plug adapted and close theoutlet of the disL charge opening; said plate being slidably arranged in the upper section of the casing.

5. A regulating valve comprising a casing having an upper bell-shaped section, an intermediate section and a lower section, a horizontal bridge extending diametrically and completely across the intermediate section said bridge being fairly wide and having a longitudinal bore, a discharge passage extending perpendicularly from the inner extremity of said longitudinal bore, and two vertical openings located on opposite sides of the discharge passage and in transverse alinement therewith, a diaphragm secured to the outer lower edge of the intermediate section, a pair of plungers projecting vertically from the diaphragm and parallel to the axis of the casing, said plungers being closer together than the Width of the bridge and slidably extending through the vertical side opening in the bridge, a closure device for the discharge passage in the bridge mounted in said plate, and a bushing tting inthe upper section of the casing in which the plate is slidably mounted.

6. A regulating valve comprising a casing having an upper bell-shaped section, an intermediate section and a lower section, a horizontal bridge extending diametrically and completely across the intermediate section said bridge being fairly wide and having a longitudinal bore, a discharge passage extendingy ,perpendicularly from the inner extremity of said longitudinal bore, and two vertical openings located on opposite sides of the discharge passage and in transverse alinement therewith, a diaphragm secured to the outer lower edge of the intermediate section, a pair of plungers projecting vertically upward from the diaphragm and parallel to the axis of the casing, said plungers being closer together than the width of the bridge and slidably extending through the vertical side openings in the bridge, a plate connected to the upper extremities of the plungers, a screwplug centrally arranged in said plate and vertically adjustable therein, suitable material in the lower end of said plug adapted to engage and close the outlet of the discharge opening, and a bushing fitting in the upper section of the casing in which the plate is slidably mounted.

7 A regulating valve comprising a suitable casing, a transverse diaphragm dividing the interior thereof into two chambers, a bridge connecting -the sides of said casing of one of said chambers and having a longitudinal bore therein and an outlet nozzle extending perpendicularly from said bore, a suitable outlet pipe leading from said chamber in which said bridge is located, a pair of plungers arranged diametrically opposite each other and extending parallel to the axis of the casing from the diaphragm through said bridge, a plate connecting the ends of FLORENCE MITCHELL. 

